New filter module for professional RF condenser microphone series. Especially in the broadcast and film industries, it effectively blocks interference caused by infrasound, such as low-frequency noises caused by wind and handling. Developed for the broadcast and film industries, filter module effectively blocks interference caused by infrasound such as low-frequency wind and handling noise thus ensuring top-quality audio recordings with the MKH 8020 (omnidirectional), MKH 8040 (cardioid) and MKH 8050 (supercardioid) RF condenser microphones. High degree of flexibility provided by their modular design, the weatherproof microphone principle and the natural, warm sound of the microphone heads make the 8000 series unique and the perfect choice for use in studios, for concerts, broadcasts and film industry.